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Expired European patentEurope

Cyclonic burner with cylindrical combustion chamber

EP 0464436 B1 · Applicant: FORSCHUNGSZENTRUM JÜLICH GMBH

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Overview

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed June 15, 1991 and granted August 9, 1995. A European patent lasts at most 20 years from filing, so its term ended June 15, 2011.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by December 15, 2016.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledJune 15, 1991
PublishedJanuary 8, 1992
GrantedAugust 9, 1995
Term endedJune 15, 2011
Application numberEP 91109846
Classification (CPC)F23C3/006

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedJune 15, 1991PublishedJan 8, 1992Patent grantedAug 9, 1995Term endedJune 15, 2011

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.